Conveyor linear drive for continuous bulk material conveying device

Abstract

A double-face linear motor with a short primary and a segmented secondary for use in belt conveyors where rotary motors are predominantly used. The primary remains fixed and static, firmly connected to the conveyor structure and the secondary follows the belt that moves in a closed loop in a vertical plane around return drums. This motor improves the efficiency of conventional conveyor belts using rotary electric motor units in their head drums. The method includes electromagnetically moving by induction the secondary blades made of a conducting material as they pass between the active faces of the motor primary where multiphase coils are arranged. The secondary blades are fastened to the belt and moves the belt by electromagnetic forces generated in the primary. The long-segmented secondary makes a distributed linear drive because the segments formed by the blades adapt to the loop path formed by the return drum of the belts.

1 . A linear drive for continuous bulk material conveying device comprising:
 a conveyor belt ( 15 ) including at least one linear induction electric motor unit ( 1 * having at least a short primary ( 14 ) with copper windings ( 02 ) in the form of coils installed in slots ( 13 ) of a laminated iron core ( 08 ), said laminated iron core ( 08 ) being double-sided ( 8   a ;  8   b ), the primary ( 14 ) being distributed along the continuous transport equipment, further equipped with a long and segmented movable secondary ( 01 ) made in the form of conductor material blades, the secondary ( 01 ) being grouped in the form of a train with overlapping blades ( 22 ) or in a trapezoidal shape ( 23 ),   wherein the canvas of the conveyor belt ( 15 ) is made of rubber, having independent fastening elements ( 04 ) for each secondary blade ( 22 ;  23 ) fixed to the rubber conveyor belt ( 15 );   wherein the primary ( 14 ) includes deflectors ( 06 ) fixed integrally with a fixing shaft ( 07 ) of faces ( 8   a ;  8   b ) of the iron core ( 8 );   an entire extension of an inner portion of the faces ( 8   a ;  8   b ) of the primary ( 140  being resin-coated with a fiberglass covering;   the iron core ( 08 ) includes on each one of its outer faces with finned heat sinks ( 10 );   wherein the primary ( 14 ) includes a protective box ( 09 ), wherein in an upper region of the protective box ( 9 ) includes upper rollers ( 03 );   wherein the secondary ( 01 ) includes a bristle cleaner ( 5 ).   
     
     
         2 - 9 . (canceled)